mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 08:35:26 +00:00
562 lines
25 KiB
Plaintext
562 lines
25 KiB
Plaintext
OVERVIEW of "ns/coreconf":
|
||
|
||
This README file is an attempt to provide the reader with a simple
|
||
synopsis of the "ns/coreconf" build system which was originally
|
||
fundamentally designed and built to accomodate Netscape's binary
|
||
release model. Wherever possible, an attempt has been made to
|
||
comply with the NSPR 2.0 build system, including mimicing the
|
||
compiler/linker flags, and directory naming structure. The reader
|
||
should keep in mind that the system builds binary releases of
|
||
header files, class files, libraries, and executables on numerous
|
||
flavors of UNIX and Windows operating systems. Unfortunately,
|
||
no serious attempt has ever been made to incorporate an ability to
|
||
generate cross-platform binaries on an Apple MacIntosh platform.
|
||
|
||
Note that this file will not attempt to redefine or document the
|
||
architecture of this system. However, documents on this subject
|
||
are available at the following URL:
|
||
|
||
http://warp/hardcore/prj-ttools/specs/release/index.html
|
||
|
||
|
||
|
||
DEPENDENCIES of "ns/coreconf":
|
||
|
||
The "ns/coreconf" build system requires the specified versions of
|
||
the following platform-dependent tools:
|
||
|
||
UNIX Platforms:
|
||
--------------
|
||
gmake (version 3.74 or later)
|
||
perl 4.0 (NOTE: perl 5.003 or later recommended)
|
||
uname
|
||
|
||
Windows Platforms:
|
||
-----------------
|
||
gmake 3.74 (must use hacked Netscape version)
|
||
shmsdos.exe (contained in Netscape gmake.exe)
|
||
nsinstall.exe (contained in Netscape gmake.exe)
|
||
perl.exe (version 4.0 for everything except testing;
|
||
NOTE: MKS toolkit perl 5.002 is broken)
|
||
perl5.exe (for testing;
|
||
NOTE: perl 5.003 or later recommended;
|
||
MKS toolkit perl 5.002 is broken)
|
||
uname.exe (use nstools version)
|
||
|
||
ENHANCEMENTS to "ns/coreconf":
|
||
|
||
With the advent of Certificate Server 4.0 using the ns/coreconf
|
||
build system, several changes had to be made to enhance
|
||
ns/coreconf support for building Java/JNI classes/programs, as
|
||
well as libraries slated to be released as binaries. While the
|
||
following may not represent an exhaustive list of these changes,
|
||
it does attempt to be at least somewhat comprehensive:
|
||
|
||
(1) During the course of these enhancements, a total of
|
||
four files have been modified, and four new files have
|
||
been added.
|
||
|
||
The following files have been modified:
|
||
|
||
- command.mk: removed old definition of JAR
|
||
|
||
- config.mk: added include statement of new
|
||
"jdk.mk" file
|
||
|
||
- ruleset.mk: allowed the $(MKPROG) variable to be
|
||
overridden by supplying it with a
|
||
default value of $(CC); augmented
|
||
numerous definitions to enhance
|
||
ability of ns/coreconf to produce
|
||
a more robust set of libraries;
|
||
added some JNI definitions; PACKAGE
|
||
definition may be overridden by new
|
||
"jdk.mk" file
|
||
|
||
- rules.mk: separated the compile phase of a
|
||
program from the link phase of a
|
||
program such that a developer can
|
||
now strictly override program linkage
|
||
by simply supplying a $(MKPROG)
|
||
variable; augmented NETLIBDEPTH
|
||
to use CORE_DEPTH but retain backward
|
||
compatibility; added JNI section;
|
||
modified .PRECIOUS rule;
|
||
|
||
The following files have been added:
|
||
|
||
- README: this file; an ASCII-based text
|
||
document used to summarize the
|
||
ns/coreconf build system and
|
||
suitable (paginated) for printing
|
||
|
||
- jdk.mk: a file comprising most (if not all)
|
||
of the default Java related build
|
||
information; the definitions in this
|
||
file are only included if NS_USE_JDK
|
||
has been defined
|
||
|
||
- jniregen.pl: a perl script used to create a
|
||
dependency for when JNI files should
|
||
be regenerated (based upon any change
|
||
to the ".class" file from which the
|
||
".h" file was originally generated)
|
||
|
||
- outofdate.pl: a perl script used to create a
|
||
dependency for when ".class" files
|
||
should be regenerated (based upon
|
||
any change to the ".java" file
|
||
from which the ".class" file was
|
||
originally generated)
|
||
|
||
(2) As stated above, the ns/coreconf build system now separates
|
||
the link phase of a program from its compilation phase.
|
||
While ns/coreconf still works exactly as it used to because
|
||
the $(MKPROG) variable is assigned $(CC) by default, a developer
|
||
may now override this behavior by simply supplying their
|
||
own unique value for $(MKPROG) on every platform. This allows
|
||
a program compiled with $(CC) to link with external libraries
|
||
that may contain "C++" linkage. Before this change, a
|
||
programmer would need to reference their own local copy of
|
||
rules.mk (see the ns/sectools/cmd/pk12util program for
|
||
an example of how this used to be accomplished).
|
||
|
||
(3) Currently, the ns/coreconf build system differs from the
|
||
NSPR 2.0 build system which utilizes an "_s" to denote
|
||
static libraries from import libraries. In fact, the
|
||
ns/coreconf build system adds no prefixes or suffixes to
|
||
distinguish one version of static libraries from another.
|
||
Note that both the ns/coreconf build system as well as the
|
||
NSPR 2.0 build system do nothing to provide a method of
|
||
distinguishing 16-bit from 32-bit static libraries on the
|
||
same machine, either, since:
|
||
|
||
a) this might only provide difficulty during
|
||
development, since static libraries always
|
||
need to be embedded within a program
|
||
(note this is highly unlikely, since libraries
|
||
for different platforms are subdivided via
|
||
a well-known subdirectory structure, and
|
||
a developer may use multiple trees for
|
||
development),
|
||
|
||
b) this maintains backwards compatibility,
|
||
something very important since no legacy
|
||
programs will need to change their link phase, and
|
||
|
||
c) Netscape as a company has dropped any plans
|
||
of future development of 16-bit products.
|
||
|
||
(4) Since several members of the Hardcore Security group did
|
||
not favor NSPR 2.0's solution of adding an "_s" to static
|
||
libraries on Windows platforms as a method to distinguish
|
||
them from their import library cousins, a different solution
|
||
was proposed and has been recently implemented for ns/coreconf:
|
||
|
||
- a 16 has been added as a suffix to both dynamic and
|
||
import libraries built on 16-bit Windows platforms
|
||
|
||
- a 32 has been added as a suffix to both dynamic and
|
||
import libraries built on 32-bit Windows platforms
|
||
|
||
Since the HCL release process currently only contains a
|
||
single instance of building a dynamic library,
|
||
ns/security/lib/fortcrypt/fort12.dll, the impact of this
|
||
change should be relatively small. (Note: HCL was the
|
||
old name of NSS.)
|
||
|
||
It should be noted that although this would additionally
|
||
limit the 8.3 namespace on 16-bit platforms, it is highly
|
||
unlikely that any future development will be performed on
|
||
this platform.
|
||
|
||
(5) The $(LIBRARY_VERSION) tag has been added to all non-static
|
||
libraries created on UNIX operating systems to alleviate
|
||
any future confusion for binary releases which utilize this
|
||
tag. Again, it should be noted that this tag is only
|
||
utilized on non-static libraries, since more than one
|
||
version of the library may need to exist simultaneously
|
||
if multiple products are utilized.
|
||
|
||
Currently, only one HCL released library utilizes this tag:
|
||
|
||
ns/security/lib/fortcrypt/fort12.a
|
||
(e. g. - in this library, the tag has been set to '12')
|
||
|
||
Again, it should be noted that although this would
|
||
additionally limit the 8.3 namespace on 16-bit platforms,
|
||
it is highly unlikely that any future development will be
|
||
performed on this platform.
|
||
|
||
(6) The $(JDK_DEBUG_SUFFIX) extension has been added to all
|
||
library and program names to support debug versions of
|
||
Java programs (e. g. - java_g, javac_g, etc).
|
||
|
||
Once again, it should be noted that although this would
|
||
additionally limit the 8.3 namespace on 16-bit platforms,
|
||
it is highly unlikely that any future Java development
|
||
will be performed on this platform.
|
||
|
||
(7) Most (if not all) default definitions for java have been
|
||
encapsulated within their own file, jdk.mk, which is
|
||
always included by default in ns/coreconf/config.mk.
|
||
However, the definitions within this file are only ever
|
||
activated if NS_USE_JDK has been set to be 1.
|
||
|
||
|
||
(8) Two perl scripts (jniregen.pl and outofdate.pl) have been
|
||
added to the system to foster a more robust development
|
||
environment for composing Java and JNI programs
|
||
utilizing the ns/coreconf build system. Both of these
|
||
perl scripts are related to resolving dependencies which
|
||
can not be accomplished through normal makefile dependencies.
|
||
|
||
(9) This file, README, was created in an attempt to allow
|
||
developers who have familiarity with ns/coreconf a simple
|
||
roadmap for what has changed, as well as a top-level view of
|
||
what comprises ns/coreconf. This file was written in
|
||
ASCII (rather than HTML) primarily to promote simple
|
||
paginated printing.
|
||
|
||
OVERVIEW of "config.mk":
|
||
|
||
This file contains the configuration information necessary to
|
||
build each "Core Components" source module:
|
||
|
||
include file name Purpose
|
||
=================== =======================================
|
||
arch.mk source and release <architecture> tags
|
||
|
||
command.mk default command macros
|
||
(NOTE: may be overridden in $(OS_CONFIG).mk)
|
||
|
||
$(OS_CONFIG).mk <architecture>-specific macros
|
||
(dependent upon <architecture> tags)
|
||
|
||
tree.mk release <tree> tags
|
||
(dependent upon <architecture> tags)
|
||
|
||
module.mk source and release <component> tags
|
||
(NOTE: A component is also called a module
|
||
or a subsystem. This file is dependent upon
|
||
$(MODULE) being defined on the command
|
||
line, as an environment variable, or in
|
||
individual makefiles, or more
|
||
appropriately, manifest.mn)
|
||
|
||
version.mk release <version> tags
|
||
(dependent upon $(MODULE) being defined on
|
||
the command line, as an environment variable,
|
||
or in individual makefiles, or more
|
||
appropriately, manifest.mn)
|
||
|
||
location.mk macros to figure out binary code location
|
||
(dependent upon <platform> tags)
|
||
|
||
source.mk <component>-specific source path
|
||
(dependent upon <user_source_tree>,
|
||
<source_component>, <version>, and
|
||
<platform> tags)
|
||
|
||
headers.mk include switch for support header files
|
||
(dependent upon <tree>, <component>, <version>,
|
||
and <platform> tags)
|
||
|
||
prefix.mk compute program prefixes
|
||
|
||
suffix.mk compute program suffixes
|
||
(dependent upon <architecture> tags)
|
||
|
||
jdk.mk define JDK
|
||
(dependent upon <architecture>,
|
||
<source>, and <suffix> tags)
|
||
|
||
ruleset.mk Master "Core Components" rule set
|
||
(should always be the last file
|
||
included by config.mk)
|
||
|
||
|
||
|
||
OVERVIEW of "rules.mk":
|
||
|
||
The "rules.mk" file consists of four sections. The first section
|
||
contains the "master" build rules for all binary releases. While
|
||
this section can (and should) largely be thought of as "language"
|
||
independent, it does utilize the "perl" scripting language to
|
||
perform both the "import" and "release" of binary modules.
|
||
|
||
The rules which dwell in this section and their purpose:
|
||
|
||
|
||
CATEGORY/rule:: Purpose
|
||
=================== =======================================
|
||
|
||
GENERAL
|
||
-------
|
||
all:: "default" all-encompassing rule which
|
||
performs "export libs program install"
|
||
|
||
export:: recursively copy specified
|
||
cross-platform header files to the
|
||
$(SOURCE_XPHEADERS_DIR) directory;
|
||
recursively copy specified
|
||
machine-dependent header files to the
|
||
$(SOURCE_MDHEADERS_DIR) directory;
|
||
although all rules can be written to
|
||
repetively "chain" into other sections,
|
||
this rule is the most commonly used
|
||
rule to "chain" into other sections
|
||
such as Java providing a simple
|
||
mechanism which allows no need for
|
||
developers to memorize specialized
|
||
rules
|
||
|
||
libs:: recursively build
|
||
static (archival) $(LIBRARY), shared
|
||
(dynamic link) $(SHARED_LIBRARY),
|
||
and/or import $(IMPORT_LIBRARY)
|
||
libraries
|
||
|
||
program:: recursively build $(PROGRAM)
|
||
executable
|
||
|
||
install:: recursively copy all libraries to
|
||
$(SOURCE_LIB_DIR) directory;
|
||
recursively copy all executables to
|
||
$(SOURCE_BIN_DIR) directory
|
||
|
||
clean:: remove all files specified in the
|
||
$(ALL_TRASH) variable
|
||
|
||
clobber:: synonym for "clean::" rule
|
||
|
||
realclean:: remove all files specified by
|
||
$(wildcard *.OBJ), dist, and in
|
||
the $(ALL_TRASH) variable
|
||
|
||
clobber_all:: synonym for "realclean::" rule
|
||
|
||
private_export:: recursively copy specified
|
||
cross-platform header files to the
|
||
$(SOURCE_XPPRIVATE_DIR) directory
|
||
|
||
|
||
IMPORT
|
||
------
|
||
import:: uses perl script to retrieve specified
|
||
VERSION of the binary release from
|
||
$(RELEASE_TREE)
|
||
|
||
RELEASE
|
||
-------
|
||
release_clean:: remove all files from the
|
||
$(SOURCE_RELEASE_PREFIX) directory
|
||
|
||
release:: place specified VERSION of the
|
||
binary release in the appropriate
|
||
$(RELEASE_TREE) directory
|
||
|
||
release_export:: recursively copy specified
|
||
cross-platform header files to the
|
||
$(SOURCE_XPHEADERS_DIR)/include
|
||
directory
|
||
|
||
release_md:: recursively copy all libraries to
|
||
$(SOURCE_RELEASE_PREFIX)/
|
||
$(SOURCE_RELEASE_LIB_DIR) directory;
|
||
recursively copy all executables to
|
||
$(SOURCE_RELEASE_PREFIX)/
|
||
$(SOURCE_RELEASE_BIN_DIR) directory
|
||
|
||
release_jars:: use perl script to package appropriate
|
||
files in the $(XPCLASS_JAR),
|
||
$(XPHEADER_JAR), $(MDHEADER_JAR), and
|
||
$(MDBINARY_JAR) jar files
|
||
|
||
release_cpdistdir:: use perl script to copy the
|
||
$(XPCLASS_JAR), $(XPHEADER_JAR),
|
||
$(MDHEADER_JAR), and $(MDBINARY_JAR)
|
||
jar files to the specified VERSION
|
||
of the $(RELEASE_TREE) directory
|
||
|
||
|
||
|
||
TOOLS and AUTOMATION
|
||
--------------------
|
||
platform:: tool used to display the platform name
|
||
as composed within the "arch.mk" file
|
||
|
||
autobuild:: automation rule used by "Bonsai" and
|
||
"Tinderbox" to automatically generate
|
||
binary releases on various platforms
|
||
|
||
tests:: automation tool used to run the
|
||
"regress" and "reporter" tools
|
||
on various regression test suites
|
||
|
||
The second section of "rules.mk" primarily contains several
|
||
"language" dependent build rules for binary releases. These are
|
||
generally "computed" rules (created on the "fly"), and include
|
||
rules used by "C", "C++", assembly, the preprocessor, perl, and
|
||
the shell.
|
||
|
||
The rules which dwell in this section and their purpose:
|
||
|
||
|
||
CATEGORY/rule:: Purpose
|
||
=================== =============================
|
||
|
||
LIBRARIES
|
||
---------
|
||
$(LIBRARY): build the static library
|
||
specified by the $(LIBRARY)
|
||
variable
|
||
|
||
$(IMPORT_LIBRARY): build the import library
|
||
specified by the
|
||
$(IMPORT_LIBRARY) variable
|
||
|
||
$(SHARED_LIBRARY): build the shared
|
||
(dynamic link) library
|
||
specified by the
|
||
$(SHARED_LIBRARY) variable
|
||
|
||
|
||
PROGRAMS
|
||
--------
|
||
$(PROGRAM): build the binary executable
|
||
specified by the $(PROGRAM)
|
||
rule
|
||
|
||
$(OBJDIR)/
|
||
$(PROG_PREFIX)%.pure: build the "purified" binary
|
||
executable specified by this
|
||
rule
|
||
|
||
|
||
OBJECTS
|
||
-------
|
||
$(OBJDIR)/
|
||
$(PROG_PREFIX)%$(OBJ_SUFFIX): build the object file
|
||
associated with the
|
||
makefile rule dependency:
|
||
|
||
%.c = C file
|
||
%.cpp = C++ file
|
||
%.cc = C++ file
|
||
%.s = assembly file
|
||
%.S = assembly file
|
||
|
||
$(OBJDIR)/
|
||
$(PROG_PREFIX)%: (NOTE: deprecated rule)
|
||
build the object file
|
||
associated with the
|
||
makefile rule dependency:
|
||
|
||
%.cpp = C++ file
|
||
|
||
MISCELLANEOUS
|
||
-------------
|
||
$(DIRS):: specifies a helper method
|
||
used by $(LOOP_THROUGH_DIRS)
|
||
to recursively change
|
||
directories and invoke
|
||
$(MAKE)
|
||
|
||
%.i: build the preprocessor file
|
||
associated with the
|
||
makefile rule dependency:
|
||
|
||
%.c = C file
|
||
%.cpp = C++ file
|
||
|
||
%: process the specified file
|
||
using the method associated
|
||
with the makefile rule
|
||
dependency:
|
||
|
||
%.pl = perl script
|
||
%.sh = shell script
|
||
|
||
alltags: tool used to recursively
|
||
create a "ctags"-style
|
||
file for reference
|
||
|
||
The third section of "rules.mk' primarily contains several JAVA
|
||
"language" build rules for binary releases. These are also
|
||
generally "computed" rules (created on the "fly").
|
||
|
||
The rules which dwell in this section and their purpose:
|
||
|
||
|
||
CATEGORY/rule:: Purpose
|
||
=================== =============================
|
||
$(JAVA_DESTPATH):: create directory specified
|
||
as the Java destination path
|
||
for where classes are
|
||
deposited
|
||
|
||
$(JAVA_DESTPATH)/$(PACKAGE):: create directories specified
|
||
within the $(PACKAGE)
|
||
variable
|
||
|
||
$(JMCSRCDIR):: create directory specified
|
||
as the JMC destination path
|
||
|
||
$(JRI_HEADER_CFILES): used to generate/regenerate
|
||
JRI header files for "C"
|
||
|
||
$(JRI_STUB_CFILES): used to generate/regenerate
|
||
JRI stub files for "C"
|
||
|
||
$(JNI_HEADERS): used to generate/regenerate
|
||
JNI header files for "C"
|
||
|
||
The fourth section of "rules.mk" primarily contains miscellaneous
|
||
build rules for binary releases. Many of these rules are here to
|
||
create new subdirectories, manage dependencies, and/or override
|
||
standard gmake "Makefile" rules.
|
||
|
||
The rules which dwell in this section and their purpose:
|
||
|
||
|
||
CATEGORY/rule:: Purpose
|
||
=================== =============================
|
||
|
||
$(PUBLIC_EXPORT_DIR):: create directory used to
|
||
house public "C" header files
|
||
|
||
$(PRIVATE_EXPORT_DIR):: create directory used to
|
||
house private "C" header
|
||
files
|
||
|
||
$(SOURCE_XP_DIR)/
|
||
release/include:: create directory used to
|
||
house "C" header files
|
||
contained in a release
|
||
|
||
$(MKDEPENDENCIES):: for UNIX systems, create
|
||
a directory used to house
|
||
dependencies and utilize
|
||
the $(MKDEPEND) rule to
|
||
create them
|
||
|
||
$(MKDEPEND):: cd to the dependency
|
||
directory and create them
|
||
|
||
depend:: if $(OBJS) exist, perform the
|
||
$(MKDEPEND) rule followed by
|
||
the $(MKDEPENDENCIES) rule
|
||
|
||
dependclean:: remove all files contained
|
||
in the dependency repository
|
||
|
||
.DEFAULT: standard gmake rule
|
||
|
||
.SUFFIXES: standard gmake rule
|
||
|
||
.PRECIOUS: standard gmake rule
|
||
|
||
.PHONY: standard gmake rule
|
||
|